the siblings of both michelle obama and barack obama. this is his half-sister speaking now. >> i'm maya soetoro-ng, an educator, mother of two, and proud to be barack obama's little sister. [ applause ] >> i'm craig robinson, michelle obama's big brother, father of four, and head coach of oregon state university's men's basketball team. any seven footers out there, give me a call. >> craig and i come from different states. we've had different upbringings. and as you can see, we have different perspectives on the world. >> but no matter how different we may seem, we share a set of values our parents gave us. values the same in chicago as they are in honolulu. a willingness to work hard. a commitment to education. and the responsibility to look out for each other. they're the values at the core of how barack and michelle have lived their lives, raised our nieces and led this country as president and first lady of the united states. >> four years ago, at this convention, i spoke with you all about how barack and i didn't grow up with much i